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Production and Respiration in Animal Populations
- W. Humphreys
- 1 June 1979
EVOLUTION OF SUBTERRANEAN DIVING BEETLES (COLEOPTERA: DYTISCIDAE HYDROPORINI, BIDESSINI) IN THE ARID ZONE OF AUSTRALIA
- R. Leys, C. Watts, S. Cooper, W. Humphreys
- Environmental Science, BiologyEvolution; international journal of organic…
- 1 December 2003
It is concluded that individual calcrete aquifers were colonized by several distantly related diving beetle lineages, indicating that all evolutionary transitions took place during the Late Miocene and Early Pliocene as a result of aridification.
A Stalagmite record of Holocene Indonesian–Australian summer monsoon variability from the Australian tropics
Aquifers: the ultimate groundwater-dependent ecosystems
- W. Humphreys
- Environmental Science, Geography
- 27 April 2006
In Australia, many stygofaunas in arid areas occur in brackish to saline waters, although they contain taxa from lineages generally restricted to freshwater systems, and, in places, there are conservation issues common to both.
Rising from Down Under: developments in subterranean biodiversity in Australia from a groundwater fauna perspective
- W. Humphreys
- Environmental Science
- 2 June 2008
The emerging species richness, the fine scale patchwork of endemicity, and the distinct regional differences contribute to a substantial increase in α, β and γ diversity of the aquatic fauna, especially in arid Australia.
Islands under the desert: molecular systematics and evolutionary origins of stygobitic water beetles (Coleoptera : Dytiscidae) from central Western Australia
The analyses indicate that there have been multiple independent origins of stygobitic dytiscids and that origins correlate with the onset of aridity during the Miocene and also provide evidence that each calcrete aquifer may represent a 'subterranean island'.
North Atlantic forcing of millennial-scale Indo-Australian monsoon dynamics during the Last Glacial period
Aquifers and hyporheic zones: Towards an ecological understanding of groundwater
Ecological constraints in subsurface environments relate directly to groundwater flow, hydraulic conductivity, interstitial biogeochemistry, pore size, and hydrological linkages to adjacent aquifers…
Subterranean archipelago in the Australian arid zone: mitochondrial DNA phylogeography of amphipods from central Western Australia
- S. Cooper, J. Bradbury, K. Saint, R. Leys, A. Austin, W. Humphreys
- Environmental Science, BiologyMolecular ecology
- 19 February 2007
Phylogenetic analyses and population genetic analyses provided strong evidence for the existence of at least 16 crangonyctoid and six hyalid divergent mitochondrial lineages, each restricted in their distribution to a single calcrete aquifer, in support of the ‘subterranean island (archipelago) hypothesis’ and extending its scope to include entirely water respiring invertebrates.
Shrimps Down Under: Evolutionary Relationships of Subterranean Crustaceans from Western Australia (Decapoda: Atyidae: Stygiocaris)
The findings suggest that Stygiocaris and Typhlatya may descend from a common ancestor that lived in the coastal marine habitat of the ancient Tethys Sea, and were subsequently separated by plate tectonic movements.